Add package Cartopy (#3909)

docs/project/changelog.md

@@ -59,7 +59,8 @@ myst:
   {pr}`3331`.
 - New packages: sourmash {pr}`3635`, screed {pr}`3635`, bitstring {pr}`3635`,
   deprecation {pr}`3635`, cachetools {pr}`3635`, xyzservices {pr}`3786`,
-  simplejson {pr}`3801`, protobuf {pr}`3813`, peewee {pr}`3897`.
+  simplejson {pr}`3801`, protobuf {pr}`3813`, peewee {pr}`3897`,
+  Cartopy {pr}`3909`, pyshp {pr}`3909`.
 - Upgraded libmpfr to 4.2.0 {pr}`3756`.
 - Upgraded scipy to 1.10.1 {pr}`3794`
 

packages/Cartopy/meta.yaml

@@ -0,0 +1,39 @@
+package:
+  name: Cartopy
+  version: 0.21.1
+  top-level:
+    - cartopy
+source:
+  url: https://files.pythonhosted.org/packages/e8/11/ed3e364b3910f0951821e6b5a03a03ce425464b72aa3da08d47b78ae17bd/Cartopy-0.21.1.tar.gz
+  sha256: 89d5649712c8582231c6e11825a04c85f6f0cee94dbb89e4db23eabca1cc250a
+  patches:
+    - patches/0001-setup-geos-config.patch
+test:
+  imports:
+    - cartopy
+    - cartopy.trace
+    - cartopy.mpl.geoaxes
+    - cartopy.crs
+requirements:
+  host:
+    - geos
+    - numpy
+  run:
+    - shapely
+    - pyshp
+    - pyproj
+    - geos
+    - matplotlib
+    - scipy
+
+build:
+  vendor-sharedlib: true
+  script: |
+    export GEOS_CONFIG=${WASM_LIBRARY_DIR}/bin/geos-config
+    echo ${GEOS_CONFIG}
+
+about:
+  home: http://scitools.org.uk/cartopy
+  PyPI: https://pypi.org/project/Cartopy/
+  summary: A library providing cartographic tools for python
+  license: LGPL-3.0-or-later

packages/Cartopy/patches/0001-setup-geos-config.patch

@@ -0,0 +1,20 @@
+diff --git a/setup.py b/setup.py
+index 8e061479..c1b592ff 100644
+--- a/setup.py
++++ b/setup.py
+@@ -81,11 +81,12 @@ def file_walk_relative(top, remove=''):
+
+ # GEOS
+ try:
+-    geos_version = subprocess.check_output(['geos-config', '--version'])
++    geos_config = os.environ.get("GEOS_CONFIG", "/src/packages/.libs/bin/geos-config")
++    geos_version = subprocess.check_output([geos_config, '--version'])
+     geos_version = tuple(int(v) for v in geos_version.split(b'.')
+                          if 'dev' not in str(v))
+-    geos_includes = subprocess.check_output(['geos-config', '--includes'])
+-    geos_clibs = subprocess.check_output(['geos-config', '--clibs'])
++    geos_includes = subprocess.check_output([geos_config, '--includes'])
++    geos_clibs = subprocess.check_output([geos_config, '--clibs'])
+ except (OSError, ValueError, subprocess.CalledProcessError):
+     warnings.warn(
+         'Unable to determine GEOS version. Ensure you have %s or later '

packages/Cartopy/test_cartopy.py

@@ -0,0 +1,46 @@
+from functools import reduce
+
+import pytest
+from pytest_pyodide import run_in_pyodide
+
+DECORATORS = [
+    pytest.mark.xfail_browsers(node="No supported matplotlib backends on node"),
+    pytest.mark.skip_refcount_check,
+    pytest.mark.skip_pyproxy_check,
+    pytest.mark.driver_timeout(60),
+]
+
+
+def matplotlib_test_decorator(f):
+    return reduce(lambda x, g: g(x), DECORATORS, f)
+
+
+@pytest.mark.driver_timeout(60)
+@run_in_pyodide(packages=["Cartopy"])
+def test_imports(selenium):
+    import cartopy
+    import cartopy.trace
+
+    print(cartopy, cartopy.trace)
+
+
+@matplotlib_test_decorator
+@run_in_pyodide(packages=["Cartopy", "matplotlib", "pyodide-http"])
+def test_matplotlib(selenium):
+    import io
+
+    import cartopy.crs as ccrs
+    import matplotlib.pyplot as plt
+    import pyodide_http
+
+    pyodide_http.patch_all()
+
+    ax = plt.axes(projection=ccrs.PlateCarree())
+    ax.coastlines()
+
+    fd = io.BytesIO()
+    plt.savefig(fd, format="svg")
+
+    content = fd.getvalue().decode("utf8")
+    assert len(content) == 128402
+    assert content.startswith("<?xml")

packages/libproj/meta.yaml

@@ -5,6 +5,8 @@ package:
 source:
   sha256: 76ed3d0c3a348a6693dfae535e5658bbfd47f71cb7ff7eb96d9f12f7e068b1cf
   url: https://download.osgeo.org/proj/proj-8.2.1.tar.gz
+  patches:
+    - patches/0001-stod-empty-zero.patch
 
 requirements:
   host:

packages/libproj/patches/0001-stod-empty-zero.patch

@@ -0,0 +1,20 @@
+diff --git a/src/iso19111/internal.cpp b/src/iso19111/internal.cpp
+index 4810202d..14fb8d83 100644
+--- a/src/iso19111/internal.cpp
++++ b/src/iso19111/internal.cpp
+@@ -242,6 +242,15 @@ bool ends_with(const std::string &str, const std::string &suffix) noexcept {
+ double c_locale_stod(const std::string &s) {
+
+     const auto s_size = s.size();
++    // Ensure that empty strings are parsed as 0.0, matching the behaviour of
++    // <cstdlib>'s strtod
++    // Without this patch, initialisation in Cartopy fails when an empty string
++    // is passed to this function and an invalid argument exception is thrown.
++    // This exception is not triggered in the non-Emscripten build.
++    if (s_size == 0) {
++        return 0.0;
++    }
++
+     // Fast path
+     if (s_size > 0 && s_size < 15) {
+         std::int64_t acc = 0;

packages/pyshp/meta.yaml

@@ -0,0 +1,16 @@
+package:
+  name: pyshp
+  version: 2.3.1
+  top-level:
+    - shapefile
+source:
+  url: https://files.pythonhosted.org/packages/98/2f/68116db5b36b895c0450e3072b8cb6c2fac0359279b182ea97014d3c8ac0/pyshp-2.3.1-py2.py3-none-any.whl
+  sha256: 67024c0ccdc352ba5db777c4e968483782dfa78f8e200672a90d2d30fd8b7b49
+test:
+  imports:
+    - shapefile
+about:
+  home: https://github.com/GeospatialPython/pyshp
+  PyPI: https://pypi.org/project/pyshp
+  summary: Pure Python read/write support for ESRI Shapefile format
+  license: MIT